381612717 has 24 divisors (see below), whose sum is σ = 560476800. Its totient is φ = 250155360.

The previous prime is 381612629. The next prime is 381612731. The reversal of 381612717 is 717216183.

381612717 is a `hidden beast` number, since 38 + 1 + 612 + 7 + 1 + 7 = 666.

It is not a de Polignac number, because 381612717 - 2⁷ = 381612589 is a prime.

It is a super-2 number, since 2×381612717² = 291256531552244178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381611717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 382263 + ... + 383259.

It is an arithmetic number, because the mean of its divisors is an integer number (23353200).

Almost surely, 2^381612717 is an apocalyptic number.

It is an amenable number.

381612717 is a deficient number, since it is larger than the sum of its proper divisors (178864083).

381612717 is a wasteful number, since it uses less digits than its factorization.

381612717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673 (or 1670 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 381612717 is about 19534.9102122329. The cubic root of 381612717 is about 725.3388614901.

The spelling of 381612717 in words is "three hundred eighty-one million, six hundred twelve thousand, seven hundred seventeen".